Unequal error protection of LT codes over noisy channels
2012 (English)In: 2012 Swedish Communication Technologies Workshop, Swe-CTW 2012, IEEE , 2012, 19-24 p.Conference paper (Refereed)
We propose a new unequal error protection (UEP) scheme for Luby Transform (LT) codes over additive white Gaussian noise (AWGN) channels. In contrast to the state-of-the-art UEP scheme for LT codes where the effective code rates are exploited for UEP, we characterize the variable-node degree distribution to achieve UEP for LT codes. For performance analysis, we compare the lower bounds on bit error rate for our proposed scheme and a conventional UEP-based LT codes over AWGN channels for various parameters. Moreover, it is demonstrated through numerical examples that our proposed UEP scheme has better performance than the conventional UEP-based LT codes over a wide range of code rates and channel conditions.
Place, publisher, year, edition, pages
IEEE , 2012. 19-24 p.
IdentifiersURN: urn:nbn:se:kth:diva-114273DOI: 10.1109/Swe-CTW.2012.6376281ScopusID: 2-s2.0-84871916057ISBN: 978-146734763-1OAI: oai:DiVA.org:kth-114273DiVA: diva2:588248
2012 Swedish Communication Technologies Workshop, Swe-CTW 2012; Lund; 24 October 2012 through 26 October 2012
QC 201301162013-01-152013-01-152013-01-16Bibliographically approved